525 static char *getvar(char *s)  in getvar()  function
942     *environ = getvar("PATH") ? : "PATH=";  in run_subshell()
1041     } else if ((*used = varend(str)-str)) return getvar(str);  in getvar_special()
1402       if (!(ss = getvar("HOME")) || !*ss) pw = bufgetpwuid(getuid());  in expand_arg_nobrace()
2140         if (!(ss = getvar(s+1))) break;  in expand_redir()
2156       char *tmp = getvar("TMPDIR");  in expand_redir()
2271   char *pp = getvar("PATH" ? : _PATH_DEFPATH), *cc = TT.isexec ? : *argv, *ss,  in sh_exec()
3064         if ((s = getvar("PWD"))) {  in do_prompt()
3065           if ((ss = getvar("HOME")) && strstart(&s, ss)) {  in do_prompt()
3096     do_prompt(getvar(ps));  in get_next_line()
3173         char *ss, *ps4 = getvar("PS4");  in run_lines()
3503     shv->str = xmprintf("%.*s=%s", (int)(varend(str)-str), str, getvar(str));  in export()
3521   char *pp = getvar("PATH") ? : _PATH_DEFPATH;  in fpathopen()
3693   if (!(ss = getvar("SHLVL"))) export("SHLVL=1");  in subshell_setup()
3751     if (!getvar("PS1")) setvarval("PS1", getpid() ? "\\$ " : "# ");  in sh_main()
3776   char *home = getvar("HOME") ? : "/", *pwd = getvar("PWD"), *from, *to = 0,  in cd_main()